Printable View
ok ive heard that 2.25" exhausts are for top end and 2.5" for mid range.
n that 4-1 is top end and 4-2-1 is for mid range.
im thinkn of purchasing 'DC Sports Ceramic Race Header 4-1 JDM Style' and a jdm exhaust (fujitsubo power getter) but arnt JDM exhaust 2.5" so if i purchase these 2 mods..would it lag down bottom?
u got it the other way around..
it's 2.5 for top and 2.25 for low-mid
you stock exhaust is 2.25" so why would you want to get one that is 2.25" ?
4-1 isnt the best for road on the type r, not enought low end to be driving comfortable mate. a good brand 4-2-1 is better for road and track days
i just got xforce 4-1 headers on my dc2r, and love it. up top you can feel a reasonable difference, and i can even feel a bit mid range.
and now my car sounds like a wrx haha :)
i have jdm 4-1, and they are miles better in the low end and i feel no loss of torque, quite confident that its actually improved the low end. i think all this talk about 4-1 losing torque/power whatever is over ratedQuote:
Originally Posted by ArSe
i'd reccommend checking here http://bob123e.tripod.com/thegreatheadertest/
all the headers are there and tested against stock
Just out of pure curiosity, do headers make that much difference in sound? I honestly thought they didnt, but i think im very wrong
sound anit really the main priority here though... a good set of 4-2-1's and you will feel/see power throughout most of the rev range.
i agree, :thumbsup:Quote:
Originally Posted by nipnip
Quote:
Originally Posted by syk
YUK!!! why would you wanna make your HONDA sound like an inferior car????
B motor's with a descent exhaust sound a milion times better than any other 4cyl out there!!!!
ummm, i doubt he wanted/intended to make his car sound like a rex?!?!
when you install the 4-2-1 headers, does this make the car consume more petrol?
still for a straight 4 to sound like a boxer engine, it must be running real bad or missing.
having a good header should help u use less fuel, but you will prob boot it around more so prob no.
I have Xforce 4-1 headers on my ITR as well and it does sound like REX, but when it hits the VTEC it's even better than rex.
lol locote... its not as if i sat down and made my decision based on how i'd make the car sound...
i was just stating that the car now has the gurgling sound like a rex... but has Malenic said, when vtec kicks in it jsut roars... the rexxie sound only seems to be there in lower revs... once you reach about 3500rpm - 4000rpm... the gurgling sound goes and just sounds big... i love it :)
ps. apparently one of the runners is slightly uneven length which causes that sound...
I agree!Quote:
Originally Posted by ArSe
2.5" exhaust?????
Well, I run 2.5" system atm with a Mugen copy 4-2-1 headers.
Not very good around the town. No power under 3KRPM and a cabin noise ehh, not very nice - sound system - absolete!
However, power from 4 - 9KRPM is unbelievable.
So, like with many other mods - it's give and take.
If you don't plan to track your car on regular basis, then DON'T DO IT! :!:
im confused, one person is saying 4-1 is not good for everyday driving. now you say you agree with him. yet you say yours is 4-2-1 with 2.5 inch cat back is also not very good around town. so still bit confused, just out of curiosity is your 2.5 inch system custom or aftermarket?Quote:
Originally Posted by olda
Yes and Yes.Quote:
Originally Posted by nipnip
4-1 headers are not very good for everyday driving.
4-2-1 system with 2.5" exhaust is also no good for everyday driving.
Had both on my DC2R.
Honda has spent the countless amount of time and money to make the DC2R driveable around the town. And they only "just" succeeded!
It comes down to the engine capacity. 1.8Lt e/g needs the certain amount of exh. back pressure to operate properly. 2.5" system would be fine with DC5R due to its 2.0Lt capacity.
So, if you alter the exhaust or intake, or both, on your DC2R, the whole equation will be compromised and the driveability will suffer.
However, if you "have to do it", then I believe, you should get the Toda 4-2-1 headers and stay with 2.25" system.
Although in order to get the full benefit from your Toda headers, you will (most likely) have to modify your air intake,to get more air through the engine.
My 2.5" system is custom, with the Magnaflow muffler, twin resonators and the hi-flow cat.
the std dc2r zaust is 2.25...so u basically sayin stay with the std exhaust..
2.5" on a dc2r wont lose enough back pressure to cause any problems or lose power. its when you start going 3" - 3.5" that it may have a slight effect, but from majority of people i've spoken to, and the research i've done on the net, overall thats more of a myth than anything else... why would majority of dc2r's (well those who i've spoken to) go for 2.5" if it was to reduce power...?
mate, i recommend going to a reputable exhaust place in your area, have a chat to them about it... or even give Adrian from Toda in ingleburn (sydney) a call and chat to him about it, save having everyone on here tell you something different...
I 3rd that motion!Quote:
Originally Posted by nipnip
as soon as I put the JDM 4-1's on the typeR I noticed considerably better response throughout the WHOLE rev range, including low end!
I think some of you guys are misinformed. The reason why the rex does sound like a rex, is because of the uneven header length, period. Not because of its boxer engine, or whatnot. End of story.
Now if your cars are beginning to sound like an impreza what is that telling you? That your straight 4 is turning into a boxer engine? No. Obviously you have uneven header length.
Now if your cars are beginning to sound like an impreza what is that telling you? That your straight 4 is turning into a boxer engine? No. Obviously you have uneven header length.
That's what I heard, and that's why I will change it very soon:)
StrawberryFace... what you've said has backed up what i was saying near the start of the conversationQuote:
Originally Posted by syk
Hey, hey , hey ....slow down..........................Quote:
Originally Posted by syk
Nobody's talking about loosing power!
What we're talking about is driveability! With the 2.5" exhaust system you will definitely gain power up the top, but most definitely loose some bottom end and therefore driveability. And I'm talking here from the current experience. I had (and still have), the 2.5" system on my CD2R for the past 2 years.
And btw, I talked to Adrian from Toda before I did it. :D
haha fair enough, must of misread your post... or misinterpreted it :)
my bad
but still, the 4-1 headers i put on i've noticed increased power over the whole rev range... mainly up the top, but down low aswell
i suppose it all comes down to what people define as drivability... i mean, to me, a car having bad drivability would be having a brass button clutch on a daily driver which is used in peak hour traffic etc... but yeah to each their own :)
cheers
-Dean
Peace man.............................Quote:
Originally Posted by syk
I believe you, you have subjectively noticed increased in power................however..................
only a dyno session - before and after - can confirm whether you have actually gained power and where.
Good driveability means that a car is easy to live with.
Yes, a brass button clutch does not promote a good driveability. :D
yeah, i mean, i think with these basic mods it can also have the placebo effect where your mind makes you think you've got increased power, but i definately do feel a difference, and my mate who drove the car was impressed by the difference after the extractors, but yeah, i dunno :)
this is just a stepping stone for me until i have finished my plans, then i may not need it and choose the forced induction route, but yeah.
cheers
-Dean